Above which temperature does the thermal conductivity of water start to fall?

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing

What additive are in a lavender tube for phlebotomists

What is the density, d, of a substance with a volume of v = 12.5 cm3 and a mass of m = 74.4 g ?